1252513402249 has 2 divisors, whose sum is σ = 1252513402250. Its totient is φ = 1252513402248.

The previous prime is 1252513402243. The next prime is 1252513402267. The reversal of 1252513402249 is 9422043152521.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 832391646025 + 420121756224 = 912355^2 + 648168^2 .

It is a cyclic number.

It is not a de Polignac number, because 1252513402249 - 2⁷ = 1252513402121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1252513402243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626256701124 + 626256701125.

It is an arithmetic number, because the mean of its divisors is an integer number (626256701125).

Almost surely, 2^{1252513402249} is an apocalyptic number.

It is an amenable number.

1252513402249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252513402249 is an equidigital number, since it uses as much as digits as its factorization.

1252513402249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 1252513402249 in words is "one trillion, two hundred fifty-two billion, five hundred thirteen million, four hundred two thousand, two hundred forty-nine".